JetBlue Airways sponsored a survey of 834 Long Beach, California, voters to measure general community support for building new facilities at Long Beach Airport. Participants were asked, “Do you support replacing temporary facilities at Long Beach Airport with more permanent structures? “The table below shows survey responses by age (Globe Research and Analysis, lbreport.com/).

Use a chi square test of independence to test the proposition that level of support is independent of age for the populations represented here. Use a significance level of 1%.

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OBSERVED FREQUENCIES Age 50 and Support level 18-29 30-39 40-49 ol Totals Definitely yes 90 25 196 524 Probably yes 5 47 36 4 182 Probably no 21 28 77 Definitely no 618 13 451 Totals 164 189 195 286 834